南京林业大学学报（自然科学版）2025，Vol.49Issue(5)：38-44,7.DOI:10.12302/j.issn.1000-2006.202401010
麋鹿野放对盐城滨海湿地土壤生态化学计量特征的影响
Effects of wild release of Elaphurus davidianus on soil ecological stoichiometric characteristics of Yancheng coastal wetlands
摘要
Abstract
[Objective]This study aimed to investigate the impacts of Elaphurus davidianus disturbance on soil ecological stoichiometry in Yancheng coastal wetlands,assess the current state of soil degradation,and provide a scientific foundation for the sustainable management of the reserve.[Method]The third core area of Yancheng Dafeng Milu National Nature Reserve was selected as the study site.Based on field surveys,the area was stratified into five disturbance intensity levels:weak(Ⅰ),mild(Ⅱ),moderate(Ⅲ),secondary heavy(Ⅳ),and severe(Ⅴ).Soil physicochemical properties,including bulk density(BD),soil water content(WC),pH,the content of soil organic carbon(SOC),total nitrogen(TN),and total phosphorus(TP),were measured through laboratory analyses.The effects of varying disturbance intensities on soil properties and ecological stoichiometric ratios were systematically evaluated.[Result](1)With the increase of E.davidianus disturbance intensity,soil BD frist decreased,and then increased,soil pH increased,while soil TN,TP content and soil WC first increased and then decreased,and SOC content showed a fluctuating trend.(2)With the increase of E.davidianus disturbance intensity,the soil C/N(mass ratio)increased,the soil N/P(mass ratio)decreased,and the soil C/P(mass ratio)fluctuated.(3)The correlations between soil C/P and SOC,and between soil N/P and TN were extremely high,and the correlation between C/N and SOC gradually decreased with the increase of E.davidianus disturbance intensity.SOC content was the main limiting factor of soil C/N and C/P,and soil TN content was the main limiting factor of soil N/P.[Conclusion]E.davidianus disturbance not only changes the basic soil properties and ecological stoichiometric characteristics,but also changes the intensity of soil stoichiometric ratios.Moderate and mild disturbance of E.davidianus is more conducive to soil mineralization and nutrient cycling.These findings suggest that maintaining E.davidianus populations within a reasonable threshold is critical for preserving soil nutrient equilibrium in Yancheng coastal wetlands.关键词
盐城滨海湿地/麋鹿/土壤基本性质/生态化学计量特征Key words
Yancheng coastal wetlands/Elaphurus davidianus(elk)/soil basic properties/ecological stoichiometric characteristics分类
农业科技引用本文复制引用
陈利,栾兆擎,李敏,李静泰,刘垚,张陈岩,何晓柔,吴晓威,吴翠玲..麋鹿野放对盐城滨海湿地土壤生态化学计量特征的影响[J].南京林业大学学报（自然科学版）,2025,49(5):38-44,7.基金项目
国家自然科学基金项目(41871097). （41871097）
